Six weeks after dozens of Belgian Malinois pups were rescued from a filthy Queens apartment coated in urine and feces, the young survivors are bouncing back — learning to play, trust and just be dogs.

There are a million reasons to love puppies. They’re cute, cuddly, and full of inquisitive charm. But if you’ve ever raised one, you know they’re also a whole lot of work. And with high-energy, highly ...